CN116903177A - Water treatment process and device for lithium electric copper foil - Google Patents

Abstract

The invention discloses a lithium battery copper foil water treatment process and device, which includes the following steps: (1) Zinc and nickel wastewater collection: collect the zinc and nickel wastewater generated during the production of lithium battery copper foil in the lithium battery copper foil production workshop; ( 2) First-level reaction: The collected zinc-nickel wastewater is lifted and transported to the first-level reaction tank, and chemicals are added to the zinc-nickel wastewater and mixed to cause heavy metal precipitation in the wastewater under the action of the chemicals. The lithium battery copper foil water treatment process and device provided by the present invention have a simple treatment process flow, and can change the adding position, stirring position and aeration position of the medicament while adding the medicament into the reaction tank, thereby making the medicament and wastewater mix more uniformly. , greatly improving the efficiency of zinc-nickel wastewater treatment and avoiding the waste of chemicals.

Description

A lithium battery copper foil water treatment process and device

Technical field

The invention relates to the technical field of water treatment for electrolytic copper foil production, and in particular to a lithium battery copper foil water treatment process and device.

Background technique

Lithium battery copper foil is one of the important materials for lithium batteries. In the process of producing electrolytic copper foil by continuous electrolysis, a large amount of zinc-nickel wastewater will be produced. The direct discharge of zinc-nickel wastewater will cause serious harm to human health and industrial and agricultural activities.

Currently, in the existing technology, the zinc-nickel wastewater treatment system has a relatively complicated process in the process of treating the zinc-nickel wastewater generated during the production of copper foil. In addition, chemicals are put into the wastewater in the reaction tank to mix with the wastewater, and the chemicals in the reaction tank and the wastewater are mixed mainly through aeration or stirring. However, enterprises with relatively large production scale of lithium battery copper foil produce a relatively large amount of zinc-nickel wastewater, and the reaction tanks for zinc-nickel wastewater treatment are generally relatively long. Traditionally, the reaction tanks in zinc-nickel wastewater treatment devices generally have aeration The outlet position is fixed, the mixing area is also relatively limited, and the adding position of the agent is also fixed, making it difficult to mix the agent and wastewater evenly. As a result, it is difficult for the wastewater to meet the discharge standard in the discharge tank after treatment, and it needs to be returned multiple times. Adding chemicals back into the reaction tank for treatment not only reduces the efficiency of zinc-nickel wastewater treatment, but also increases the amount of chemicals used and increases the cost of zinc-nickel wastewater treatment.

Therefore, it is necessary to provide a lithium battery copper foil water treatment process and device to solve the above technical problems.

Contents of the invention

In order to solve the problem of the complicated process of treating zinc-nickel wastewater generated in the production process of lithium battery copper foil, the chemicals added in the reaction tank are difficult to mix evenly, which reduces the efficiency of zinc-nickel wastewater treatment and increases the usage of chemicals. , the technical problem of increasing the cost of zinc-nickel wastewater treatment, the present invention provides a lithium battery copper foil water treatment process and device.

The lithium battery copper foil water treatment process provided by the invention includes the following steps:

(1) Zinc and nickel wastewater collection:

Collect the zinc-nickel wastewater generated during the production of lithium battery copper foil in the lithium battery copper foil production workshop;

(2) First-order reaction:

The collected zinc-nickel wastewater is lifted and transported to the first-level reaction tank. Agents such as oxidants, alkali, PAC, and PAM are added to the zinc-nickel wastewater and mixed, so that the wastewater forms heavy metal precipitation under the action of the agents. And the suspended solids, organic matter, colloids, etc. in the zinc-nickel wastewater are condensed into large particles of alum, so that solid-liquid separation can be easily achieved;

(3) First-level precipitation:

Transport the wastewater of mixed chemicals to the primary sedimentation tank to precipitate the heavy metals produced after the reaction and the large particles of alum. The upper layer forms preliminary clear water and the lower layer forms sludge;

(4) Secondary reaction:

The upper layer of clear water in the primary sedimentation tank is transported to the secondary reaction tank, and the sludge settled in the lower layer is discharged and stored. In the secondary reaction tank, alkali, PAC, PAM and other reagents are respectively added and mixed. So that the preliminary clean water can further form heavy metal precipitation under the action of chemicals, and the suspended solids, organic matter, colloids, etc. in the zinc-nickel wastewater can be condensed into large particles of alum, so that solid-liquid separation can be easily achieved;

(5) Secondary precipitation:

The preliminary clear water mixed with chemicals in the secondary reaction tank is transported to the secondary sedimentation tank to precipitate the heavy metals produced after the reaction and the large particles of alum. The upper layer forms preliminary clear water and the lower layer forms sludge;

(6) Sludge storage:

Discharge and store the sludge produced by the lower layer sedimentation in the primary sedimentation tank and the secondary sedimentation tank;

(7) PH adjustment:

Transfer the upper layer of clear water in the secondary sedimentation tank to the pH backfill tank, and add an appropriate amount of acid into it to adjust the pH value to maintain the water pH value between 6.0 and 9.0 to ensure that the effluent pH value reaches the standard;

(8) Zinc-nickel sludge filter press:

The stored sludge is pressure-filtered using dehydration equipment. The filtrate produced by the filtration is transported and collected together with the zinc-nickel wastewater. The dry sludge formed after filtration is transported out for subsequent treatment;

(9) Temporary storage of clear water:

The clean water that has been acid-base reconciled in the PH backfill tank is transported to the discharge buffer tank, and the clean water in it is tested. If the zinc and nickel content reaches the qualified standard, it will be transported to the external drainage tank for discharge. If the zinc and nickel content is unqualified, it will be discharged to the discharge tank. Then it will be transported to be re-processed together with the zinc-nickel wastewater to be treated;

(10) Compliance with emission standards:

Discharge the clean water that meets the standard in the external drainage pool to the outside.

The invention also provides a lithium battery copper foil water treatment device, which includes:

Zinc-nickel wastewater collection pool, the zinc-nickel wastewater collection pool is used to collect zinc-nickel wastewater generated in the process of producing lithium battery copper foil in the lithium battery copper foil production workshop;

Lifting pump, the lifting pump is used to provide sufficient water for the normal operation of the zinc-nickel wastewater treatment system, and transport the zinc-nickel wastewater in the zinc-nickel wastewater collection pool to the next-level equipment;

The first-level reaction tank is used to add oxidants, alkali, PAC, PAM and other reagents to the zinc-nickel wastewater respectively to mix and react, so that the wastewater can form heavy metal precipitation under the action of the reagents, and make the wastewater Suspended solids, organic matter, colloids, etc. in zinc-nickel wastewater are condensed into large particles of alum, so that solid-liquid separation can be easily achieved;

The first-level sedimentation tank is used to precipitate the heavy metals and large particles of alum produced in the wastewater mixed with chemicals under the action of the chemicals, and settle to the lower layer in the first-level sedimentation tank to form sludge, and the upper layer forms preliminary clean water;

Secondary reaction tank, the second reaction tank is used to add alkali, PAC, PAM and other reagents to the upper layer of clear water in the first-level sedimentation tank in the second reaction tank, and mix and react to make the initial Under the action of chemicals, the clean water further forms heavy metal precipitation, and the suspended solids, organic matter, colloids, etc. in the zinc-nickel wastewater are condensed into large particles of alum, so that solid-liquid separation can be easily achieved;

Secondary sedimentation tank. The secondary sedimentation tank is used to precipitate heavy metals and large alum particles produced by the preliminary clear water mixed with chemicals in the secondary reaction tank under the action of the chemicals. The secondary sedimentation tank is used to precipitate to the lower layer in the secondary sedimentation tank to form sludge. , clear water forms in the upper layer;

PH backfill tank, which is used to adjust the PH value of the upper clear water in the secondary sedimentation tank by adding an appropriate amount of acid to maintain the PH value of the water between 6.0 and 9.0 to ensure that the PH value of the effluent reaches the standard;

A sludge storage tank, which is used to store sludge precipitated in the lower layer of the primary sedimentation tank and the secondary sedimentation tank;

Zinc-nickel sludge filter press. The zinc-nickel sludge filter press is used to squeeze and filter the sludge in the sludge storage tank to dehydrate it. The formed dry sludge is transported out of the country, and the filtrate after the filtration is Transport it to the zinc-nickel wastewater collection pool for treatment together with the zinc-nickel wastewater to be treated;

The discharge buffer tank is used to store the clean water after pH adjustment and conduct sampling testing; the external discharge tank is used to store the clean water that meets the standard and discharge it to the outside.

Preferably, both the primary reaction pool and the secondary reaction pool include: a pool body for reacting with the added reagent, and both sides of the pool body are respectively equipped with wastewater input pipes and wastewater output pipes; for installation The support plate of the stirring mechanism is located above the pool body. The stirring mechanism is used to stir the wastewater in the pool body and the added medicament to mix them so as to react; used to carry out the reaction in the pool body. An aeration mechanism for aeration, the aeration mechanism is installed on the support plate; a support moving mechanism for supporting and moving the support plate, the support moving mechanism includes a support for moving the support plate A sliding support mechanism that supports and makes it slide and a moving mechanism that drives the support plate and the components on it to move.

Preferably, the stirring mechanism includes a stirring tube, a plurality of stirring blades, a servo motor and two bevel gears. The stirring tube is rotatably installed in the center of the support plate and extends downward into the pool body. The stirring blades are all fixedly installed on the mixing tube, the servo motor is fixedly installed on the top of the support plate, and the two bevel gears are fixedly sleeved on the output shaft of the servo motor and the On the stirring tube, two bevel gears are meshed.

Preferably, the aeration mechanism includes a blower, an air supply duct, a first support frame and a casing, the blower is fixedly installed on the top of the support plate, and the air supply duct is fixedly connected to the outlet of the blower. At the air end, the first support frame is fixedly installed on the top of the support plate, the casing is fixedly installed on the first support frame, and one end of the air supply pipe is fixedly connected to the top end of the casing. , the top of the stirring tube extends into the casing and is sealed and rotationally connected with the casing. The stirring blade is provided with a chamber, and the chamber is connected with the inside of the stirring tube. The bottom of the stirring tube The end is a closed structure, and a plurality of aeration holes are provided on both sides of the stirring blade, and the aeration holes are connected with the chamber.

Preferably, the support plate is equipped with a liquid medicine adding mechanism. The liquid medicine adding mechanism includes a liquid adding pump, a liquid outlet pipe, a liquid inlet pipe and a hose. The liquid adding pump is fixedly installed on the support plate. The top of the liquid outlet pipe is fixedly connected to the liquid outlet end of the liquid adding pump. One end of the liquid outlet pipe extends to the bottom of the support plate. The liquid outlet pipe is provided with a flow valve. The liquid inlet pipe The pipe is fixedly connected to the liquid inlet end of the liquid adding pump, the hose is fixedly sleeved on one end of the liquid inlet pipe, and the hose is long enough.

Preferably, the support plate is also provided with a powder and granular medicine adding mechanism. The powder and granular medicine adding mechanism includes a discharge box, a mounting base, two support rods, a central axis, an auger and a discharge motor. The unloading box is fixedly installed on the support plate. The bottom of the unloading box is connected with a unloading pipe extending into the pool body through the support plate. The top opening of the unloading box is hinged with a top cover. The top cover is equipped with a handle, the mounting seat is located in the center of the inside of the unloading box, and the two support rods are fixedly installed horizontally on both sides of the mounting seat, and the two support rods are mutually connected. The far away end is fixedly connected to the inner walls of both sides of the unloading box respectively. The central axis is rotatably mounted on the mounting base and extends downward. The auger is fixedly sleeved on the central axis. The auger is located in the unloading tube. The unloading motor is fixedly installed on the top of the mounting base. The bottom end of the output shaft of the unloading motor is fixedly connected to the top end of the central axis. The mounting base is round cake-shaped. External threads are provided on the outer wall of the mounting base, and a material-proof cover is installed on the threads. The unloading motor is located in the material-proof cover.

Preferably, a protective cover is fixedly installed on the top of the support plate, and the blower and the servo motor are located in the protective cover.

Preferably, the sliding support mechanism includes two rectangular seats, two sliding rods and two movable seats. The two rectangular seats are symmetrically fixed and installed on both sides of the top of the pool body. The sides of the rectangular long seats that are close to each other are provided with chute extending in the horizontal direction. The two sliding rods are respectively fixedly installed in the two chute. The two movable seats are respectively slidably sleeved on the two chute. On the sliding rod, the two movable seats are slidingly connected to the two chute respectively, and the two movable seats are fixedly connected to both sides of the support plate.

Compared with related technologies, the lithium battery copper foil water treatment process and device provided by the present invention have the following beneficial effects:

The invention provides a lithium battery copper foil water treatment process and device:

1. Through the zinc-nickel wastewater collection tank, primary reaction tank, lifting pump, primary sedimentation tank, secondary reaction tank, secondary sedimentation tank, PH backfill tank, discharge buffer tank, efflux tank, sludge storage tank, zinc The nickel sludge filter press treats the zinc-nickel wastewater generated during the production of lithium battery copper foil, and the treatment process is simple;

2. By arranging a stirring mechanism, a drum mechanism, a liquid agent adding mechanism, a powdery agent adding mechanism, and a support moving mechanism in the primary reaction pool and the secondary reaction pool, the mixing mechanism can be adjusted to the primary reaction pool and the secondary reaction pool. When adding chemicals to the reaction tank, the adding position, stirring position, and aeration position of the chemicals can be changed, so that the chemicals and wastewater are mixed more evenly, which greatly improves the efficiency of zinc-nickel wastewater treatment and avoids the waste of chemicals.

Description of the drawings

Figure 1 is a flow chart of the lithium battery copper foil water treatment process provided by the present invention;

Figure 2 is a schematic diagram of the lithium battery copper foil water treatment device provided by the present invention;

Figure 3 is a schematic three-dimensional structural diagram of the primary reaction tank (secondary reaction tank) in the present invention;

Figure 4 is an enlarged schematic diagram of part A shown in Figure 3;

Figure 5 is a schematic front cross-sectional structural diagram of the primary reaction tank (secondary reaction tank) in the present invention;

Figure 6 is an enlarged schematic diagram of part B shown in Figure 5;

Figure 7 is an enlarged schematic diagram of part C shown in Figure 5;

Figure 8 is a schematic diagram of the three-dimensional structure of the protective box in the present invention;

Figure 9 is a schematic front cross-sectional structural diagram of the unloading mechanism of the present invention;

Figure 10 is a three-dimensional assembly diagram of the mounting base, support rod and material-proof cover in the present invention;

Figure 11 is a schematic diagram of the three-dimensional structure of the pool body in the present invention.

Numbers in the figure: 1. Zinc-nickel wastewater collection tank; 2. Primary reaction tank; 3. Lift pump; 4. Primary sedimentation tank; 5. Secondary reaction tank; 6. Secondary sedimentation tank; 7. PH backfill tank ; 8. Discharge buffer tank; 9. Outflow tank; 10. Sludge storage tank; 11. Zinc-nickel sludge filter press; 12. Pool body; 13. Support plate; 14. Stirring tube; 15. Stirring blade ; 16. Servo motor; 17. Bevel gear; 18. Blower; 19. Air supply pipe; 20. First support frame; 21. Casing; 22. Liquid adding pump; 23. Liquid outlet pipe; 24. Liquid inlet Pipe; 25, hose; 26, rectangular long seat; 27, sliding rod; 28, movable seat; 29, rack; 30, second support frame; 31, rotating shaft; 32, moving gear; 33, worm; 34, Main gear; 35. Transmission gear; 36. Worm gear; 37. Protective box; 38. Protective cover; 39. Unloading box; 40. Unloading tube; 41. Top cover; 42. Mounting seat; 43. Support rod; 44 , central axis; 45, auger; 46, unloading motor; 47, anti-material cover.

Implementation

The present invention will be further described below in conjunction with the drawings and embodiments.

Please refer to Figures 1-11 in conjunction with each other. Figure 1 is a flow chart of the lithium battery copper foil water treatment process provided by the present invention; Figure 2 is a schematic diagram of the lithium battery copper foil water treatment device provided by the present invention; Figure 3 is a first-level lithium battery copper foil water treatment device provided by the present invention. A schematic diagram of the three-dimensional structure of the reaction pool (secondary reaction pool); Figure 4 is an enlarged schematic diagram of part A shown in Figure 3; Figure 5 is a schematic front cross-sectional structural diagram of the primary reaction pool (secondary reaction pool) in the present invention; Figure 6 is an enlarged schematic view of part B shown in Figure 5; Figure 7 is an enlarged schematic view of part C shown in Figure 5; Figure 8 is a three-dimensional structural schematic view of the protective box in the present invention; Figure 9 is a front cross-section of the unloading mechanism in the present invention Figure 10 is a schematic diagram of the three-dimensional assembly of the mounting base, the support rod and the material-proof cover in the present invention; Figure 11 is a schematic diagram of the three-dimensional structure of the pool body in the present invention.

The lithium battery copper foil water treatment process provided by the invention includes the following steps:

(1) Zinc and nickel wastewater collection:

Collect the zinc-nickel wastewater generated during the production of lithium battery copper foil in the lithium battery copper foil production workshop;

(2) First-order reaction:

The collected zinc-nickel wastewater is lifted and transported to the first-level reaction tank. Agents such as oxidants, alkali, PAC, and PAM are added to the zinc-nickel wastewater and mixed, so that the wastewater forms heavy metal precipitation under the action of the agents. And the suspended solids, organic matter, colloids, etc. in the zinc-nickel wastewater are condensed into large particles of alum, so that solid-liquid separation can be easily achieved;

(3) First-level precipitation:

Transport the wastewater of mixed chemicals to the primary sedimentation tank to precipitate the heavy metals produced after the reaction and the large particles of alum. The upper layer forms preliminary clear water and the lower layer forms sludge;

(4) Secondary reaction:

The upper layer of clear water in the primary sedimentation tank is transported to the secondary reaction tank, and the sludge settled in the lower layer is discharged and stored. In the secondary reaction tank, alkali, PAC, PAM and other reagents are respectively added and mixed. So that the preliminary clean water can further form heavy metal precipitation under the action of chemicals, and the suspended solids, organic matter, colloids, etc. in the zinc-nickel wastewater can be condensed into large particles of alum, so that solid-liquid separation can be easily achieved;

(5) Secondary precipitation:

The preliminary clear water mixed with chemicals in the secondary reaction tank is transported to the secondary sedimentation tank to precipitate the heavy metals produced after the reaction and the large particles of alum. The upper layer forms preliminary clear water and the lower layer forms sludge;

(6) Sludge storage:

Discharge and store the sludge produced by the lower layer sedimentation in the primary sedimentation tank and the secondary sedimentation tank;

(7) PH adjustment:

Transfer the upper layer of clear water in the secondary sedimentation tank to the pH backfill tank, and add an appropriate amount of acid into it to adjust the pH value to maintain the water pH value between 6.0 and 9.0 to ensure that the effluent pH value reaches the standard;

(8) Zinc-nickel sludge filter press:

The stored sludge is pressure-filtered using dehydration equipment. The filtrate produced by the filtration is transported and collected together with the zinc-nickel wastewater. The dry sludge formed after filtration is transported out for subsequent treatment;

(9) Temporary storage of clear water:

The clean water that has been acid-base reconciled in the PH backfill tank is transported to the discharge buffer tank, and the clean water in it is tested. If the zinc and nickel content reaches the qualified standard, it will be transported to the external drainage tank for discharge. If the zinc and nickel content is unqualified, it will be discharged to the discharge tank. Then it will be transported to be re-processed together with the zinc-nickel wastewater to be treated;

(10) Compliance with emission standards:

Discharge the clean water that meets the standard in the external drainage pool to the outside.

The invention also provides a lithium battery copper foil water treatment device, which includes:

Zinc-nickel wastewater collection pool 1, the zinc-nickel wastewater collection pool 1 is used to collect zinc-nickel wastewater generated in the process of producing lithium battery copper foil in the lithium battery copper foil production workshop;

Lifting pump 3. The lifting pump 3 is used to provide sufficient water for the normal operation of the zinc-nickel wastewater treatment system, and transport the zinc-nickel wastewater in the zinc-nickel wastewater collection pool 1 to the next-level equipment;

The first-level reaction tank 2 is used to add oxidants, alkali, PAC, PAM and other reagents to the zinc-nickel wastewater respectively to mix and react, so that the wastewater forms heavy metal precipitation under the action of the reagents, And the suspended solids, organic matter, colloids, etc. in the zinc-nickel wastewater are condensed into large particles of alum, so that solid-liquid separation can be easily achieved;

The first-level sedimentation tank 4 is used to precipitate the heavy metals and large particles of alum produced in the wastewater mixed with chemicals under the action of the chemicals, and settle to the lower layer in the first-level sedimentation tank 4 to form sludge, and the upper layer forms sludge. Initial water clearing;

Secondary reaction tank 5. The second-level reaction tank 5 is used to add alkali, PAC, PAM and other medicaments to the upper layer of clear water in the first-level sedimentation tank 4 in the second-level reaction tank 5, and allow them to mix and react. , used to further form heavy metal precipitation in the preliminary clean water under the action of chemicals, and to condense suspended solids, organic matter, colloids, etc. in the zinc-nickel wastewater into large particles of alum, so that solid-liquid separation can be easily achieved;

Secondary sedimentation tank 6. The secondary sedimentation tank 6 is used to precipitate the heavy metal precipitation and large alum particles produced by the preliminary clean water mixed with the medicament in the secondary reaction tank 5 under the action of the medicament in the secondary sedimentation tank 6. Sludge is formed in the lower layer and clear water is formed in the upper layer;

PH backfill tank 7. The PH backfill tank 7 is used to adjust the PH value of the upper clear water in the secondary sedimentation tank 6 by adding an appropriate amount of acid to maintain the water PH value between 6.0 and 9.0 to ensure the effluent pH. The value reaches the standard;

Sludge storage tank 10, the sludge storage tank 10 is used to store the sludge precipitated in the lower layer of the primary sedimentation tank 4 and the secondary sedimentation tank 6;

Zinc-nickel sludge filter press 11. The zinc-nickel sludge filter press 11 is used to squeeze and filter the sludge in the sludge storage tank 10 to dehydrate it. The formed dry sludge is transported out of the country and processed by press filter. The final press filtrate is transported to the zinc-nickel wastewater collection tank 1 for treatment together with the zinc-nickel wastewater to be treated;

Discharge buffer pool 8, the discharge buffer pool 8 is used to store the clean water after pH adjustment, and conduct sampling testing; the external discharge pool 9, the external discharge pool 9 is used to store the clean water that meets the standard, and discharge it to the outside. .

Both the primary reaction pool 2 and the secondary reaction pool 5 include: a pool body 12 for reacting with the added reagent, and both sides of the pool body 12 are respectively equipped with wastewater input pipes and wastewater output pipes; A support plate 13 of a stirring mechanism is installed. The support plate 13 is located above the pool body 12. The stirring mechanism is used to stir the wastewater in the pool body 12 and the added medicament to mix them so as to react; An aeration mechanism for aerating the inside of the pool 12, the aeration mechanism is installed on the support plate 13; a support moving mechanism for supporting and moving the support plate 13, the The support moving mechanism includes a sliding support mechanism for supporting and sliding the support plate 13 and a moving mechanism for driving the support plate 13 and components on it to move.

The stirring mechanism includes a stirring tube 14, a plurality of stirring blades 15, a servo motor 16 and two bevel gears 17. The stirring tube 14 is rotatably installed in the center of the support plate 13 and extends downward into the pool body. , a plurality of stirring blades 15 are fixedly installed on the stirring tube 14, the servo motor 16 is fixedly installed on the top of the support plate 13, and the two bevel gears 17 are fixedly sleeved on the On the output shaft of the servo motor 16 and the stirring tube 14, the two bevel gears 17 are meshed, and the stirring mechanism is used to stir and mix the zinc-nickel wastewater and the chemicals.

The aeration mechanism includes a blower 18, an air supply pipe 19, a first support frame 20 and a casing 21. The blower 18 is fixedly installed on the top of the support plate 13, and the air supply pipe 19 is fixedly connected to the top of the support plate 13. At the air outlet end of the blower 18, the first support frame 20 is fixedly installed on the top of the support plate 13, the sleeve 21 is fixedly installed on the first support frame 20, and the air supply pipe 19 One end is fixedly connected to the top of the casing 21. The top of the stirring tube 14 extends into the casing 21 and is sealed and rotationally connected with the casing 21. The stirring blade 15 is provided with a chamber. The chamber is connected with the inside of the stirring tube 14. The bottom end of the stirring tube 14 is a closed structure. A plurality of aeration holes are provided on both sides of the stirring blade 15. The aeration holes are connected to the cavity. The chambers are connected, and the aeration mechanism can blow air into the wastewater while stirring to aerate it, thereby improving the mixing effect of waste gas and chemicals and making it more uniform.

The support plate 13 is equipped with a liquid medicine adding mechanism. The liquid medicine adding mechanism includes a liquid adding pump 22, a liquid outlet pipe 23, a liquid inlet pipe 24 and a hose 25. The liquid adding pump 22 is fixedly installed there. The top of the support plate 13, the liquid outlet pipe 23 is fixedly connected to the liquid outlet end of the liquid adding pump 22, one end of the liquid outlet pipe 23 extends to the bottom of the support plate 13, and the liquid outlet pipe 23 is A flow valve is provided. The liquid inlet pipe 24 is fixedly connected to the liquid inlet end of the liquid adding pump 22. The hose 25 is fixedly sleeved on one end of the liquid inlet pipe 24. The hose 25 is long enough. , used to add liquid chemicals to the wastewater in the pool body 12 through the liquid chemical solution adding mechanism.

The support plate 13 is also provided with a powder and granular medicine adding mechanism. The powder and granular medicine adding mechanism includes a lowering box 39, a mounting base 42, two support rods 43, a central axis 44, an auger 45 and a bottom. The feeding motor 46 and the feeding box 39 are fixedly installed on the support plate 13. The bottom of the feeding box 39 is connected with a feeding pipe 40 that extends into the pool body through the supporting plate. The feeding box 39 A top cover 41 is hingedly connected to the top opening, and the top cover 41 is equipped with a handle. The mounting seat 42 is located at the center of the inside of the unloading box 39, and the two support rods 43 are fixedly installed horizontally on the unloading box 39. Both sides of the mounting base 42, and the ends of the two support rods 43 that are far away from each other are fixedly connected to the inner walls of both sides of the unloading box 39. The central axis 44 is rotatably installed on the mounting base 42 and moves toward the mounting base 42. Extending downward, the auger 45 is fixedly sleeved on the central axis 44. The auger 45 is located in the unloading tube 40. The unloading motor 46 is fixedly installed on the top of the mounting base 42. The bottom end of the output shaft of the unloading motor 46 is fixedly connected to the top end of the central shaft 44. The mounting base 42 is round and cake-shaped. The outer wall of the mounting base 42 is provided with external threads, and a material-proof cover 47 is installed on the threads. , the unloading motor 46 is located in the material-proof cover 47 , and the powdered and granular medicament adding mechanism is used to add powdered medicaments and granular medicaments to the wastewater in the pool 12 .

A protective cover 38 is fixedly installed on the top of the support plate 13. The blower 18 and the servo motor 16 are located in the protective cover 38. The servo motor 16, the blower 18 and other components are protected by the protective cover 38.

The sliding support mechanism includes two rectangular long seats 26, two sliding rods 27 and two moving seats 28. The two rectangular long seats 26 are symmetrically fixed and installed on both sides of the top of the pool body 12. Two The sides of the rectangular long seats 26 that are close to each other are provided with chute extending in the horizontal direction. The two sliding rods 27 are fixedly installed in the two chute respectively, and the two movable seats 28 slide respectively. It is sleeved on the two sliding rods 27, and the two moving seats 28 are slidingly connected to the two chute respectively, and the two moving seats 28 are fixedly connected to both sides of the support plate 13 respectively. , the support plate 13 can be supported through the sliding support mechanism, and can be relatively stable during movement.

The moving mechanism includes two racks 29, a second support frame 30, two rotating shafts 31, two moving gears 32, two worms 33, a main gear 34, two transmission gears 35 and two worm gears 36. The racks 29 are respectively fixedly installed on the tops of the two rectangular seats 26, the second support frame 30 is fixedly installed at the center of the bottom of the support plate 13, and the two rotating shafts 31 are respectively rotatably installed on Between both sides of the second support frame 30 and both sides of the support plate 13, two moving gears 32 are respectively fixedly installed on the ends of the two rotating shafts 31 that are far away from each other. 32 are meshed with the two racks 29 respectively. The two worms 33 are vertically rotatably installed on the support plate 13 and the bottom inner wall of the second support frame 30. The two worms 33 The threads on the worms 33 are in opposite directions, the main gear 34 is fixedly sleeved on the stirring tube 14, and the two transmission gears 35 are fixedly sleeved on the tops of the two worms 33. The two transmission gears 35 are meshed with the main gear 34, and the two worm gears 36 are respectively fixedly sleeved on the ends of the two rotating shafts 31 that are close to each other. The two worm gears 36 are meshed with the two worms 33 respectively. Protective boxes 37 are fixedly installed on both sides of the support plate 13. The bottoms of the two protective boxes 37 and the sides close to each other are openings. The two moving gears 32 are respectively located in the two protective boxes. 37, by moving the support plate 13 and the stirring mechanism, aeration mechanism, liquid medicine adding mechanism and powdery medicine adding mechanism on the support plate 13, the stirring position, aeration position and medicine adding position can be changed, thereby making the medicine Mixes more evenly with wastewater.

It is worth noting that the circuits, electronic components and modules involved in the present invention are all existing technologies and can be completely implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

The working principle of the lithium battery copper foil water treatment process and device provided by the present invention is as follows:

This solution is also equipped with an electric control cabinet. The electric control cabinet is installed on the equipment. When in use, the electric control cabinet can be used to start the operation of each electrical equipment. The power connection method of each electrical equipment is based on the existing mature technology. The technology is well known to those in the field and will not be described redundantly here;

When in use, the zinc-nickel wastewater generated in the lithium battery copper foil production workshop during the production of lithium battery copper foil is collected into the zinc-nickel wastewater collection tank 1, and the zinc-nickel wastewater is transported to the first-level reaction tank 2 through the lifting pump 3 body 12;

Pour the powdered medicine or granular medicine that needs to be added into the feeding box 39, and extend the hose 25 into the liquid medicine container that needs to be added, and start the liquid adding pump 22, the servo motor 16 and the blower 18 simultaneously. While adding liquid chemicals into the pool body 12, the servo motor 16 drives the stirring tube 14 to rotate through the two bevel gears 17. The stirring tube 14 drives a plurality of stirring blades 15 to rotate to stir the wastewater and chemicals in the pool body 12. ;

Moreover, during the mixing process of the wastewater and chemicals by the stirring blade 15, the blower 18 extracts air and sprays it through the aeration holes on the stirring blade 15, which disturbs the wastewater and chemicals and improves the mixing effect;

Not only that, the mixing tube 14 drives the two worms 33 to rotate in opposite directions through the main gear 34 and the two transmission gears 35, and drives the two rotating shafts 31 to rotate through the two worm gears 36. Since the threads on the two worms 33 rotate in opposite directions, The two worm gears 36 mesh with the two worms 33 respectively, so that the two rotating shafts 31 rotate in the same direction, and the two rotating shafts 31 drive the two moving gears 32 to rotate in the same direction synchronously, and the moving gear 32 meshes with the rack 29, so that The two moving gears 32 are rotated on the two racks 29 and moved horizontally, thereby driving the support plate 13 and the stirring mechanism, aeration mechanism, and liquid agent adding mechanism on it, thereby changing the stirring position and aeration. position, the position where liquid chemicals are added, so that the liquid chemicals and wastewater are mixed more evenly;

When adding powdered medicament or granular medicament, the unloading motor 46 is started, and the auger 45 is driven to rotate through the central shaft 44, pushing the powdered medicament or granular medicament to move downward, and fall from the bottom of the unloading pipe 40 to into the wastewater in the pool body 12, and simultaneously start the servo motor 16 and the blower 18 to move the support plate 13 and the stirring mechanism, aeration mechanism, and liquid agent adding mechanism on it, thereby changing the stirring position, aeration position, and powder agent As well as the adding position of granular reagents, so that powder reagents and granular reagents can be mixed with wastewater more evenly;

Moreover, during the movement, by controlling the forward and reverse rotation of the servo motor 16, the two moving gears 32 can move back and forth on the two racks 29, thereby improving the stirring effect and making the wastewater chemicals more uniformly mixed;

After the agent is mixed with the zinc-nickel wastewater, the wastewater in the first-level reaction tank 2 is transported to the first-level sedimentation tank 4. The heavy metal precipitation and large alum particles produced under the action of the agent are precipitated to the lower layer in the first-level sedimentation tank 4. Sludge is formed, and preliminary clear water is formed in the upper layer;

The preliminary clean water in the upper layer of the secondary reaction tank 5 is transported to the secondary reaction tank 5, and the sludge in the lower layer is discharged into the sludge storage tank 10. The steps in the secondary reaction tank 5 are similar to those in the primary reaction tank 2. , add the medicament into it, and start the servo motor 16, the blower 18, and the blanking motor 46 in the secondary reaction tank 5 to make the medicament and preliminary clean water mix more evenly;

The preliminary clean water in the secondary reaction tank 5 is then transported to the secondary sedimentation tank 6. The heavy metal precipitation and large alum particles produced under the action of the agent are precipitated in the secondary sedimentation tank 6 to the lower layer to form sludge, and the upper layer is formed into clear water. ;

The clean water in the upper layer of the secondary reaction tank 5 is transported to the PH backfill tank 7, and the sludge in the lower layer is transported to the sludge storage tank 10. Acid is added to the PH backfill tank 7 to adjust the PH value of the clean water to make it PH. It is maintained between 6.0 and 9.0, and then transported to the discharge buffer pool 8. The clean water in the discharge buffer pool 8 is sampled and tested. If the discharge standard is met, it is transported to the external discharge pool 9 for further discharge. However, if the discharge standard is not met, the water will be discharged. Then it will be returned to be treated together with the zinc-nickel wastewater to be treated;

The sludge in the sludge storage tank 10 is dehydrated through the zinc-nickel sludge filter press 11, so that the filtrate filtered out is transported to the zinc-nickel wastewater collection tank 1 for treatment together with the zinc-nickel wastewater to be treated, and the press The filtered dry mud is transported out for processing.

Compared with related technologies, the lithium battery copper foil water treatment process and device provided by the present invention have the following beneficial effects:

The invention provides a lithium battery copper foil water treatment process and device, which uses a zinc-nickel wastewater collection tank 1, a first-level reaction tank 2, a lifting pump 3, a first-level sedimentation tank 4, a second-level reaction tank 5, and a second-level sedimentation tank 6. PH backfill tank 7, discharge buffer tank 8, outflow tank 9, sludge storage tank 10, and zinc-nickel sludge filter press 11 treat the zinc-nickel wastewater generated during the production of lithium battery copper foil, and the treatment process is simple;

By arranging a stirring mechanism, a drum mechanism, a liquid agent adding mechanism, a powdery agent adding mechanism, and a support moving mechanism in the primary reaction pool 2 and the secondary reaction pool 5, the first-level reaction pool 2 and the second-level reaction pool 5 can be moved in a coordinated manner. While adding chemicals into the tank body 12 of the first-stage reaction tank 5, the adding position, stirring position, and aeration position of the chemicals can be changed, so that the chemicals and wastewater are mixed more evenly, which greatly improves the efficiency of zinc-nickel wastewater treatment and avoids the loss of chemicals. waste.

It should be noted that the equipment structure and drawings of the present invention mainly describe the principle of the present invention. In terms of the technical design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that those skilled in the art understand the principles of the above invention, they can clearly understand the details of its power mechanism, power supply system and control system.

The above are only examples of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present invention, or directly or indirectly applied to other related technologies fields are equally included in the scope of patent protection of the present invention.

Claims (9)

1. The water treatment process of the lithium electric copper foil is characterized by comprising the following steps of:

(1) And (3) zinc-nickel wastewater collection: collecting zinc-nickel wastewater generated in the process of producing the lithium electric copper foil in a lithium electric copper foil production workshop;

(2) Primary reaction: lifting and conveying the collected zinc-nickel wastewater into a first-stage reaction tank, adding a medicament into the zinc-nickel wastewater, mixing the zinc-nickel wastewater to enable the wastewater to form heavy metal precipitation under the action of the medicament, and condensing suspended matters, organic matters, colloid and the like in the zinc-nickel wastewater into large-particle alum blossom;

(3) Primary precipitation: delivering the wastewater mixed with the medicament into a first-stage sedimentation tank to enable heavy metals generated after reaction and large-particle alum blossom to be precipitated, wherein the upper layer forms primary clear water, and the lower layer forms sludge;

(4) Secondary reaction: conveying the upper clean water in the primary sedimentation tank to a secondary reaction tank, discharging and storing the sludge precipitated in the lower layer, adding a traditional Chinese medicine agent in the secondary reaction tank, and mixing the traditional Chinese medicine agent to further form heavy metal precipitate in the primary clean water under the action of the traditional Chinese medicine agent, and condensing suspended matters, organic matters, colloid and the like in zinc-nickel wastewater into large-particle alum flowers;

(5) Secondary precipitation: the primary clear water mixed with the medicament in the secondary reaction tank is conveyed into a secondary sedimentation tank, so that heavy metal sediment and large alum blossom sediment generated after the reaction are precipitated, the primary clear water is formed on the upper layer, and sludge is formed on the lower layer;

(6) And (3) storing sludge: discharging sludge generated by the lower layer precipitation in the primary sedimentation tank and the secondary sedimentation tank and storing;

(7) pH adjustment: conveying the upper clean water in the secondary sedimentation tank into a PH backfill tank, and adding a proper amount of acid into the PH backfill tank to adjust the PH value so as to ensure that the PH value of the effluent reaches the standard;

(8) And (3) zinc-nickel sludge filter pressing: the stored sludge is subjected to pressure filtration by using dehydration equipment, the filter pressing liquid obtained by pressure filtration is conveyed to be collected with zinc-nickel wastewater, and the dried sludge formed after the filter pressing is conveyed outside for subsequent treatment;

(9) Temporary storage of clear water: conveying clear water subjected to acid-base mixing in a PH backfill tank to a discharge buffer tank, detecting clear water in the discharge buffer tank, conveying the clear water to an external discharge tank for standard discharge when the zinc-nickel content reaches a standard, and conveying the clear water to be treated together with zinc-nickel wastewater for retreatment when the zinc-nickel content is unqualified;

(10) And (3) discharging after reaching the standard: and discharging the clean water reaching the standard in the discharging pool outwards.

2. A lithium copper foil water treatment device, characterized in that the device is applied to the lithium copper foil water treatment process of claim 1, and the device comprises:

the zinc-nickel wastewater collection tank is used for collecting zinc-nickel wastewater generated in the process of producing the lithium electric copper foil in a lithium electric copper foil production workshop;

the lifting pump is used for providing sufficient water quantity for the normal operation of the zinc-nickel sewage treatment system and conveying zinc-nickel wastewater in the zinc-nickel wastewater collection tank to next-stage equipment;

the primary reaction tank is used for adding medicaments such as an oxidant, alkali, PAC (PAC), PAM (PAM) and the like into the zinc-nickel wastewater respectively, mixing and reacting the zinc-nickel wastewater to form heavy metal precipitation under the action of the medicaments, and agglomerating suspended matters, organic matters, colloid and the like in the zinc-nickel wastewater into large-particle alum blossom;

the primary sedimentation tank is used for precipitating heavy metals and large-particle alum flowers generated by the wastewater mixed with the medicament under the action of the medicament, and the heavy metals and the large-particle alum flowers are precipitated in the primary sedimentation tank to the lower layer to form sludge, and the upper layer forms primary clear water;

the secondary reaction tank is used for respectively adding medicaments such as alkali, PAC, PAM and the like into the upper clean water in the primary sedimentation tank in the secondary reaction tank again and mixing the medicaments for reaction, so that the primary clean water further forms heavy metal sediment under the action of the medicaments and suspended matters, organic matters, colloid and the like in the zinc-nickel wastewater are coagulated into large-particle alum blossom;

the secondary sedimentation tank is used for precipitating heavy metals and large-particle alum flowers generated by primary clear water mixed with a reagent in the secondary reaction tank under the action of the reagent, and the heavy metals and the large-particle alum flowers are precipitated in the secondary sedimentation tank to the lower layer to form sludge, and the upper layer forms clear water;

the PH backfill tank is used for regulating the PH value of the upper clean water in the secondary sedimentation tank by adding a proper amount of acid, so that the PH value of the water is maintained between 6.0 and 9.0, and the PH value of the effluent is ensured to reach the standard;

the sludge storage tank is used for storing sludge precipitated at the lower layers of the primary sedimentation tank and the secondary sedimentation tank;

the zinc-nickel sludge filter press is used for squeezing and filtering sludge in the sludge storage tank to dehydrate the sludge;

the discharging buffer pool is used for storing the clear water subjected to the PH adjustment and carrying out sampling detection on the clear water;

and the discharging pool is used for storing clean water reaching the standard and discharging the clean water outwards.

3. The lithium copper foil water treatment device according to claim 2, wherein the primary reaction tank and the secondary reaction tank each comprise:

the device comprises a tank body for reacting with the added medicament, wherein a wastewater input pipe and a wastewater output pipe are respectively arranged on two sides of the tank body;

the supporting plate is used for installing a stirring mechanism, the supporting plate is arranged above the tank body, and the stirring mechanism is used for stirring and mixing wastewater in the tank body with the added medicament so as to perform a reaction;

the aeration mechanism is used for aerating the tank body and is arranged on the supporting plate;

the support moving mechanism is used for supporting and moving the support plate and comprises a sliding support mechanism used for supporting and sliding the support plate and a moving mechanism used for driving the support plate and parts on the support plate to move.

4. The device for treating water of lithium-ion copper foil according to claim 3, wherein the stirring mechanism comprises a stirring tube, a plurality of stirring blades, a servo motor and two bevel gears, the stirring tube is rotatably installed in the center of the supporting plate and extends downwards into the tank body, the stirring blades are fixedly installed on the stirring tube, the servo motor is fixedly installed on the top of the supporting plate, the two bevel gears are fixedly sleeved on an output shaft of the servo motor and the stirring tube respectively, and the two bevel gears are meshed.

5. The water treatment device of lithium copper foil according to claim 4, wherein the aeration mechanism comprises a blower, an air supply pipe, a first supporting frame and a sleeve, the blower is fixedly installed at the top of the supporting plate, the air supply pipe is fixedly connected with the air outlet end of the blower, the first supporting frame is fixedly installed at the top of the supporting plate, the sleeve is fixedly installed on the first supporting frame, one end of the air supply pipe is fixedly connected with the top end of the sleeve, the top end of the stirring pipe extends into the sleeve and is sealed and rotationally connected with the sleeve, the stirring blade is provided with a cavity, the cavity is communicated with the stirring pipe, the bottom end of the stirring pipe is of a closed structure, and a plurality of aeration holes are formed in two sides of the stirring blade and are communicated with the cavity.

6. The lithium-ion copper foil water treatment device according to claim 3, wherein the support plate is provided with a liquid medicament adding mechanism, the liquid medicament adding mechanism comprises a liquid adding pump, a liquid outlet pipe, a liquid inlet pipe and a hose, the liquid adding pump is fixedly arranged at the top of the support plate, the liquid outlet pipe is fixedly connected with a liquid outlet end of the liquid adding pump, one end of the liquid outlet pipe extends to the lower part of the support plate, the liquid outlet pipe is provided with a flow valve, the liquid inlet pipe is fixedly connected with the liquid inlet end of the liquid adding pump, the hose is fixedly sleeved at one end of the liquid inlet pipe, and the hose is long enough.

7. The lithium electric copper foil water treatment device according to claim 3, wherein the supporting plate is further provided with a powder agent adding mechanism, the powder agent adding mechanism comprises a blanking box, a mounting seat, two supporting rods, a middle shaft, an auger and a blanking motor, the blanking box is fixedly installed on the supporting plate, the bottom of the blanking box is communicated with a blanking pipe penetrating through the supporting plate and extending into the tank body, a top cover is hinged to a top opening of the blanking box, a handle is assembled on the top cover, the mounting seat is arranged in the center of the interior of the blanking box, two supporting rods are respectively and horizontally fixedly installed on two sides of the mounting seat, one ends, away from each other, of the supporting rods are respectively and fixedly connected with two inner walls of the blanking box, the middle shaft is rotatably installed on the mounting seat and extends downwards, the auger is fixedly sleeved on the middle shaft, the auger is located in the blanking pipe, the blanking motor is fixedly installed at the top of the mounting seat, the bottom end of the blanking motor is fixedly connected with the top of the middle shaft, the mounting seat is in a shape, the mounting seat is provided with a round cover, and the mounting seat is provided with an external thread preventing thread.

8. The water treatment device for the lithium electric copper foil according to claim 5, wherein a protective cover is fixedly arranged on the top of the supporting plate, and the blower and the servo motor are positioned in the protective cover.

9. The water treatment device for the lithium electric copper foil according to claim 3, wherein the sliding support mechanism comprises two rectangular long seats, two sliding rods and two movable seats, the two rectangular long seats are symmetrically and fixedly installed on two sides of the top of the tank body, sliding grooves extending in the horizontal direction are formed in one sides, close to each other, of the two rectangular long seats, the two sliding rods are fixedly installed in the two sliding grooves respectively, the two movable seats are respectively sleeved on the two sliding rods in a sliding mode, the two movable seats are respectively connected with the two sliding grooves in a sliding mode, and the two movable seats are respectively fixedly connected with two sides of the supporting plate.